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Does the nucleus make enzymes?

DNA molecules are freed of their histone, and the two strands unwind. A large enzyme complex (RNA Polymerase) binds to one of the strands. Although the nuclear DNA contains all of the information or codes necessary to make proteins, protein synthesis does not occur in the nucleus.

How are nucleus involved in making proteins?

In eukaryotes, ribosomes get their orders for protein synthesis from the nucleus, where portions of DNA (genes) are transcribed to make messenger RNAs (mRNAs). An mRNA travels to the ribosome, which uses the information it contains to build a protein with a specific amino acid sequence.

How is the nucleus involved in the process of making proteins quizlet?

Nucleus receives chemical signal to make a specific protein. The nucleus contains the chromosomes, which contain the DNA. The gene message is copied into RNA, which leaves the nucleus through the nuclear pore to the ribosomes. The proteins are made on the ribosomes.

What are the major steps in protein synthesis?

It includes three steps: initiation, elongation, and termination. After the mRNA is processed, it carries the instructions to a ribosome in the cytoplasm. Translation occurs at the ribosome, which consists of rRNA and proteins.

What are the 5 steps for protein synthesis?

Terms in this set (5)

  • Unzipping. – DNA double helix unwinds to expose a sequence of nitrogenous bases.
  • Transcription. A copy of one of the DNA strand is made.
  • Translation (Initiation) mRNA couples w/ ribosome & tRNA brings free amino acids to ribosomes.
  • Elongation. – Anticodon of tRNA recognizes codon on mRNA.
  • Termination.

What statement is the first step of protein synthesis?


Where is the information for protein synthesis stored?

The type of RNA that contains the information for making a protein is called messenger RNA (mRNA) because it carries the information, or message, from the DNA out of the nucleus into the cytoplasm. Translation, the second step in getting from a gene to a protein, takes place in the cytoplasm.

What are the two factors that determine protein quality?

In fact, there are two main factors that determine the quality of a protein. These are the amino acid composition and how effectively you digest and absorb a particular protein.

Which protein is present in skin?


Which protein is present in hair?

At the molecular level, keratin is a helical protein (Pauling & Corey, 1950). There are two types of keratin fibres that exist in hair: type I with acidic amino acid residues and type II with basic amino residues.

Which protein is present in blood?

Families of blood proteins

Blood protein Normal level %
Albumins 3.5-5.0 g/dl 55%
Globulins 2.0-2.5 g/dl 38%
Fibrinogen 0.2-0.45 g/dl 7%
Regulatory proteins <1%